Electrical Connectors CHASE NIPPLE

The “chase nipple” is used as a bushing in knocks-outs in electrical boxes, or to couple boxes “back to back”.

CAT. NO. MFG. NO. DESCRIPTION EACH 1K905

842TB 1/2” Steel $1.36

GROUND WIRE PIPE CLAMP Zinc Plated

This ground wire pipe clamp attaches to any

steel or copper pipe or manifolds up to 1” OD. Used in conjunction with ground wire, this clamp is ideal for grounding CSST pipe, or any other application requiring the need for grounding. Made of die cast zinc alloy with zinc plated screws, accepts #2 thru #10 grounding wire.

EMT CLAMP

1 hole steel strap for ¾” “thick wall” electrical conduit, or ¾” iron pipe

CAT. NO. MFG. NO. EACH 6E186H HS102

$1.23

CAT. NO. MFG. NO. DESCRIPTION 8K301

624016 EACH Zinc Plated Ground Wire Pipe Clamp $6.73

DETERMINE BREAKER SIZE FOR ELECTRIC HEATERS

Circuit breakers are selected by amperage & voltage. IE: 30 amp, 240 V, breaker. (single or double pole is determined by the physi- cal application)

A 10 KW heater at 230 volts, will pull how many Amps? Back to basics...KW means kilowatts, or 1,000 watts. 10 KW = 10,000 watts. Knowing that watts is simply a combination of volts x amps, we can use that information, expressed as a formula, to find the amperage:

Watts = Volts x Amps OR (Watts = Amps) Volts

IE: 10,000 watts divided by 230 volts = 43.48 amps.

We would normally oversize the breaker by 20%, or to the heater manufacturers spec. (if we knew what the recommendation was). Now, when the question arises questioning the amp draw on an electric heater, simply apply the information above.

15 KW @ 240 volts = 62.50 Amps. 15 KW @ 208 volts = 72.12 Amps.

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