Champion 25-Foot 30-Amp 125/250-Volt Fan-Style Generator Extension Cord (L14-30P to four 5-20R) Powerful  Converts a 30-amp locking outlet to four 20-amp household outlets and extends your power up to 25 feet Weather Resistant  Service grade, abrasion and weather-resistant insulation, plus the included dust covers keep your outlets clean when not in use Flexible  The cold and heat resistant, 10-gauge wire stays flexible in extreme temperatures and is rated for 125/250-volt use Safe  Extend your power up to 25 feet away, protecting you and others from hazardous generator exhaust Reliable  Champion Support includes 1-year limited warranty with FREE lifetime technical support from dedicated experts The convenient flat cable allows for easy placement under doors or window