disconnect Location

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jersey

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Hard wired mixers and ice cream machines.They are 40 amps ,single phase.Can the breaker be the disc. if its in the basement,or should i put s cord w/outlet and plug ?
 
Re: disconnect Location

This equipment is no different than any other, and would require an disco within sight. If the panel is within sight and less than 50 feet, fine. It is quite typical to have attachment cords on the equipment you describe.
 
Re: disconnect Location

jersey most likely this equipment will be broken down for cleaning regularly. Do the cleaning folks a favor and provide an easily operated disconnecting means at the machine.

Hardwiring of this type of equipment sounds odd.

The code references would be 422.32 and Part IX of Article 430.

A disconnecting means must be within sight.

[ May 30, 2005, 07:40 PM: Message edited by: iwire ]
 
Re: disconnect Location

Wouldn't a permanently installed breaker lock satisfy the requirement if the panel were more than 50' away or not within sight?
 
Re: disconnect Location

Originally posted by infinity:
Wouldn't a permanently installed breaker lock satisfy the requirement if the panel were more than 50' away or not within sight?
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Maybe.

422.32 Disconnecting Means for Motor-Driven Appliance.
If a switch or circuit breaker serves as the disconnecting means for a permanently connected motor-driven appliance of more than 1/8 hp, it shall be located within sight from the motor controller and shall comply with Part IX of Article 430.

Exception: If a motor-driven appliance of more than 1/8 hp is provided with a unit switch that complies with 422.34(A), (B), (C), or (D), the switch or circuit breaker serving as the other disconnecting means shall be permitted to be out of sight from the motor controller.
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Re: disconnect Location

Originally posted by jersey:
If these units have there own on/off then they can be hard wired right?
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Yes if you are sure the switch complies with 422.34 and the breaker with 422.34(D).

422.34 Unit Switch(es) as Disconnecting Means.
A unit switch(es) with a marked-off position that is a part of an appliance and disconnects all ungrounded conductors shall be permitted as the disconnecting means required by this article where other means for disconnection are provided in the following types of occupancies.

(D) Other Occupancies. In other occupancies, the branch-circuit switch or circuit breaker, where readily accessible for servicing of the appliance, shall be permitted as the other disconnecting means.
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The key points;

The unit switch must disconnect all the ungrounded conductors.

The unit switch mus have a marked "off" position

The breaker must be readily accessible.

Accessible, Readily (Readily Accessible). Capable of being reached quickly for operation, renewal, or inspections without requiring those to whom ready access is requisite to climb over or remove obstacles or to resort to portable ladders, and so forth.
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Re: disconnect Location

The problems with sanitation people are:

1. They are not likely to have locks or be able to NOT lose them. Usually, sanitation people are at the bottom of the economic pile or are at the bottom of the brains pile or all of the above.

2. They are very wet hence a cord and plug that is NOT pin and sleeve will be a safety hazard. Even for pin and sleeve the receptacle would need an interlocked disconnect switch.

3. The pressure washers that they use will force water into just about everything. In a food plant all of the bearings need to be regreased before starting production.

4. Sanitation people are so bored with their jobs that they will fill a light fixture with water. When you come in in the morning the fixture looks just like they unscrewed it from the conduit, filled it up with a garden hose, and then stick it backm up. Thanks to modern insulation systems the fixture actually works when filled with water.
 
Re: disconnect Location

As far as installing a cord & making it plug & cord connected if the units did not come that way it maybe a violation of the UL listing.
 
Re: disconnect Location

As far as installing a cord & making it plug & cord connected if the units did not come that way it maybe a violation of the UL listing.
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If they didn't come with a cord and plug what did they come with?
 
Re: disconnect Location

Originally posted by physis:
As far as installing a cord & making it plug & cord connected if the units did not come that way it maybe a violation of the UL listing.
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If they didn't come with a cord and plug what did they come with?
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It seems to me there is no UL listing violation for NOT using a plug and cord connection if the motor does not come that way.

The other way around you might have an issue (if for instance you snipped off the plug and hard wired it).
 
Re: disconnect Location

Originally posted by johndeereman:
As far as installing a cord & making it plug & cord connected if the units did not come that way it maybe a violation of the UL listing.
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I've never heard of that. Why would cord and plug be a violation? The inspectors around here love when I install cord and twist locks on kitchen equipment.
 
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