If a machine is running on a 10A circuit instead of a true 15A supply circuit. Can this cause adverse operation over long operational runs without tripping the circuit breaker. I know this may be a daft question as the 10A circuit can supply 15A, however voltage drop etc could be issues over lighter cable to the copier ? And the effect to correct operation if additional units (Finishers, punch units etc) are added to the same circuit. (I am aware that the regulations do not permit this type of connection in any case.)
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Equipment/power supply Design engineers usually take into account CHANGES IN LOAD CURRENT & STABILIZATION AGAINST MAINS SUPPLY VOLTAGE at the design stage. A technique called DE- RATING is is commonly used, although this has also a limit. A circuit designed to operate on a load current of 15A, can easily be operated on a 10A cct., this has the effect of extending life of the components/equipment. BUT should a fault occur in the power supply cct & excess current gets its way to the load, without blowing fuses, then it can result into damage. It is important to refer to the manufacturer's data sheet about the technical specification of power requirement of the equipment especially in relation LOAD CURRENT REGULATION. A considerable change in load current & voltage e.g powering additional units of the copier, finisher etc will definitely affect operation in the long run , especially as the various components making up the machine ages. By the way, since you know Regulations doesn't allow it why don't you simply do the right thing? -
Was just an observation of another companies machine onsite. And wondered at the implications to operation. I would guess that any high current draw faults would cause the circuit to trip faster as the current draw is higher, on a smaller supply circuit. And a "short" would still operate the breaker at the lower operating point as set at the switch board.Comment
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Theoretically that is true. but sometimes the circuit doesn't trip or the fuse blow FAST enough to protect the device. I have worked ( repaired) many power supply boards with defective components, while the fuse or circuit breakers are intact.Comment
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The 10A device/circuit would be operating at about 75% of its load capacity. The 15A device/circuit would be operating inside 50% of it's SWL (Safe Working Load). If there was a transient in the power line or back-EMF then the 10A device/circuit might become an expensive fuse.
HTH
GDMInauguration to the "AI cancel-culture" fraternity 1997...
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To add to the operational power requirements. If the copier (10A) is running on a 10A circuit, and the circuit already has other loading so we see voltage drop. Would we see operational changes to the copier, quirky faults of somekind ? I am just speculating, I find it interesting to do the exercise. As alot of power circuits are looped many times when additional power points are added to a site.Comment
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This is a little off topic, but I'm curious.
What kind of business has 10A circuits? The smallest standard residential circuit is 15A, and the smallest standard business circuit is 20A. At least within the last 40 years. Maybe not in the US?
Or maybe you've got just 10A load remaining on a 20A circuit? IMHO it is just ridiculous to purchase a $10K MFP, and not provide the necessary power requirements (perhaps $200 total cost for a dedicated line). =^..^=If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
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Hi BC
Here in Australia we have double the housewhole power output per power-point than you guys in USA.
In Australia have 10amp 240volt standard housewhole and small office powerpoints. (2400watts)
We then step up to a specially installed 15amp 240volt powerpoint for small industries and heavy current applications like home welders. The power applications then step up further to 415volt 3phase for serious industries.
Most of our electrical stove an electrical hotwater systems in the normal housewhole runs 240v @ 30-50amps.
You guys in the USA have a standard housewhole 120v 15amp points.
HTH
GDMInauguration to the "AI cancel-culture" fraternity 1997...
•••••• •••[§]• |N | € | o | M | Δ | t | π | ¡ | x | •[§]••• ••••••Comment
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Thanks Neo. I learn something new every day. =^..^=If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
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Thanks a lot for that explanation NEOMATRIX, we have almost the same electrical standards, British Standards (BS3636) ,here in the EAST AFRICAN region as your country AUSTRALIA. I suppose this applies to most COMMONWEALTH COUNTRIES in the world. Single phase power 240V at 50Hz for domestic applications, and 415V/50Hz for industrial applications. As compared to 120v/60Hz for the USA.Comment
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A good indicator of the level to which ricoh's are over-rated with regard to current is the fact that many, if not most american ricohs that "require" a 20amp outlet have a 15 amp primary circuit breaker at the power input to the machine.
On the other hand, I've had konica minolta boxes do some wierd crap with overloaded circuits.Comment
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