[SML] minor rant

Dan Sheehan dsheehan.sml at gmail.com
Sat Feb 14 13:13:12 UTC 2015


just thought I'd share:

240 V power is commonly black and red for the two hot legs
(white is reserved for neutral)

Baseboard heater presents two wires:  red and black.

Mount-in-unit thermostat for same,
made by the same mfg and purchased in the same ubiquitous store,
has two pairs of red & black wires.

So, connect one red/black pair to the red/black L1-L2 source,
other red/black pair to the heater red/black, right ?

- - - -

No, WRONG !
That configuration is what circuit breakers are for!

T-stat uses 2 reds for line, 2 blacks for load.
Not marked on the unit.

( I checked after (my bad!) installing first of two units,
 before attempting to apply power)
-- 
...Dan Sheehan
Fixer of things that break




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