SNAP SWITCH RATING

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acrwc10

acrwc10

Master Code Professional
Location
CA
Occupation
Building inspector
Would a Leviton 120/277v rated switch be acceptable on a 240v electric heater? the Infratec ones with the quartz elements, used outside.
 
don_resqcapt19

don_resqcapt19

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Staff member
Location
Illinois
Occupation
retired electrician
The UL Guide Information for "Snap Switchs (WJQR)" says this:
AC-ONLY GENERAL-USE SNAP SWITCHES
An AC-only general-use snap switch has a marked amp and voltage rating, which is one of the ratings given in Table II. These switches are intended for installation in a flush device box (flush snap switch), mounting on an outlet box covers, or surface mounting (surface snap switch).

AC-only general-use snap switches rated up to 277 V AC are suitable for the control of:
  • Resistive loads not exceeding the marked amp and voltage rating of the switch.
  • Inductive loads not exceeding the marked amp and voltage rating of the switch.
  • Electric discharge lamp loads not exceeding the marked amp and voltage rating of the switch.
  • Tungsten-filament lamp loads at 120 V AC up to the full current rating of the switch.
  • Electronic ballast, self-ballasted lamp, compact fluorescent lamp, and LED driver lamp loads up to 20 A, but not exceeding the amp rating of the switch at its marked voltage rating.
  • Motor loads up to 80% of the amp rating of the switch, but not exceeding 2 hp.
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